Improved apparatus for cooling and refrigerating



UNITED STATES PATENT OFFICE.,

JOHN AGATE, OF PITTSFOBD, NEW YORK.

IMPROVED APPARATUS FOR COOLING AND REFRIGERsATING.

Specification forming part of Letters Patent- No. 94,373, dated August 31, 1869.

To all whom it may concern:

Be it known that I, JOHN AGATE, of Pittsford, in the county of Monroe and State of New York, have invented a new and useful Refrigerator; and I do hereby declare that the following` is a full, clear, and exact description thereof, reference being had to the accompanying drawing, making part of this specification, in which the figure represents' a vertical central section of my invention.

The object and nature of my improvement will be understood by reference to the specilication and drawing; and to enable others to make and use the same, I will describe its construction and operation.

In the cooling-chamber A, I place a coil of pipe, (l, of any desirable size or length, so arranged that its upper and lower extremities, c

and c,comrnunicate with the water-receptacle,

B, respectively, near its top and bottom.

The water in tub B is cooled by ice, orother means, and its height must always b'e sufficient to whollyr or partly cover the opening c ofthe upper extremity of the worm.

The tub B may be situated in any position above or away from A, provided that the lower extremity, c', of the worm never enters B below the point where it leaves A.

The operation is as follows: When B is lled with cold water, the latter, of course, enters and iills the worm C, lowering the temperature of the chamber by absorption, which oper- -ation also slightly raises the temperature ot' the water in the worm. The consequence is that, since warm water, being lighter, rises and oats upon colder, a circulation is created from bottom to top of the worm, and from top to bottom of the tub B, as shown by the arrows. This action continues till the contents of chamber A and the water in B are brought to the same temperature.

My invention is particularly adapted to preserve a proper temperature in beer or malt liquors during the process of fermentation.

With the ordinary cooling device a stream ot' warm spring or river water, cooled by ice, is passed through a worm located in the t'ermenting cistern or tank, and allowed to escape at the upper end. Thus a large quantity of ice is required to reduce the temperature of the water in the beginning, and much of the heatabsorbing power of the cooled water is lost through the constant waste of the latter.

In my apparatus the cold water returns repeatedly to the ice-tub, and will continue so to do till the temperature becomes equalized, when fresh ice may be added if necessary.

If the chamber A is used as au ordinary refrigeratcr, it may be constructed with double walls, with the usual non-conducting material between them, and the coil C located close to the innerwall, to economiz'e space.

In place ot' the worm, I may use pipes running around the chamber at top and bottom, communicating with vthe ice-tub at top and bottom, and connected together by anynumber ot' perpendicular pipes; or, it' desirable, an, other lining may be put in, between which and the inner wall the water shall circulate through proper connections with the ice-tub,

lJOHN AGATE.

Witnesses:

WM. S. LoUGHBoRoUGH, F. H. CLEMENT. 

